Speaker heat sink



FIG. 1 is a perspective view of the ornamental design of the present invention;

FIG. 2 is a top view of the ornamental design shown in FIG. 1;

FIG. 3 is a bottom view of the ornamental design shown in FIG. 1;

FIG. 4 is a first elevation view of the ornamental design shown in FIG. 1; and,

FIG. 5 is a second elevation view of the ornamental design shown in FIG. 1. 

The ornamental design for a speaker heat sink, as shown. 